Constitution, List of Meetings, Officers, Committees, Fellows and Members, Masalah 33 |
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Halaman 98
... ohms . 340 ohms 114 to 1 66 231 5 66 14,000 66 170 66 66 242 5 " 648,000 66 2,400 པ 251 5 66 180,000 66 930 16 261 5 66 135,000 66 710 66 66 82.3 " 270 66 66 196.5 " " 190 66 66 6 107 5 66 118,000 66 740 66 159 66 66 108 5 66 200,000 66 ...
... ohms . 340 ohms 114 to 1 66 231 5 66 14,000 66 170 66 66 242 5 " 648,000 66 2,400 པ 251 5 66 180,000 66 930 16 261 5 66 135,000 66 710 66 66 82.3 " 270 66 66 196.5 " " 190 66 66 6 107 5 66 118,000 66 740 66 159 66 66 108 5 66 200,000 66 ...
Halaman 98
... ohms . 340 ohms 114 to 1 66 231 5 66 14,000 66 170 66 66 242 5 " 648,000 66 2,400 པ 251 5 66 180,000 66 930 16 261 5 66 135,000 66 710 66 66 82.3 " 270 66 66 196.5 " " 190 66 66 6 107 5 66 118,000 66 740 66 159 66 66 108 5 66 200,000 66 ...
... ohms . 340 ohms 114 to 1 66 231 5 66 14,000 66 170 66 66 242 5 " 648,000 66 2,400 པ 251 5 66 180,000 66 930 16 261 5 66 135,000 66 710 66 66 82.3 " 270 66 66 196.5 " " 190 66 66 6 107 5 66 118,000 66 740 66 159 66 66 108 5 66 200,000 66 ...
Halaman 99
... ohms resistance . When the bridge is balanced , one - half of the current flows through the cell and acts upon the selenium . Between the bridge and the cell is a reversing switch , so that the current can be reversed through the cell ...
... ohms resistance . When the bridge is balanced , one - half of the current flows through the cell and acts upon the selenium . Between the bridge and the cell is a reversing switch , so that the current can be reversed through the cell ...
Halaman 101
... ohms 1,000 ohms 20 to 1 6,500 400 66 16.2 Full size , No. 13 1 element 9,000 39 800 15 66 68 66 14 5 66 2,440 66 130 66 11.2 18 66 66 66 " " .6 15 5 " 6 4,640 66 66 66 27 5 66 6,900 39 39 210 440 19 16 22 66.66 16 66 66 66 66 66 126 1 ...
... ohms 1,000 ohms 20 to 1 6,500 400 66 16.2 Full size , No. 13 1 element 9,000 39 800 15 66 68 66 14 5 66 2,440 66 130 66 11.2 18 66 66 66 " " .6 15 5 " 6 4,640 66 66 66 27 5 66 6,900 39 39 210 440 19 16 22 66.66 16 66 66 66 66 66 126 1 ...
Halaman 102
... ohms . On changing the battery to 5 elements the resistance fell instantly to 30 ohms , and there remained . On again using the current from 25 elements , the resistance instantly returned to 40,000 ohms . Had these results been due in ...
... ohms . On changing the battery to 5 elements the resistance fell instantly to 30 ohms , and there remained . On again using the current from 25 elements , the resistance instantly returned to 40,000 ohms . Had these results been due in ...
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Istilah dan frasa umum
ABSTRACT acid action affinity Albany albuminoids alcohol Association astronomical atoms Baltimore battery Boston Cambridge carbon cell cent Charles Chas chemical Cincinnati College color Conn determined Died March Edward electrical electrical potential electromotive force errors ether experiments F. W. Putnam force George give Harvard College Observatory Harvard Observatory Haven heat Henry Inst investigation isoamyl alcohol James John Joseph light Louis magnetic Mass mathematical measured mechanical metal method milk Minn Minneapolis Miss molecules Montreal motion O. C. Marsh observations Observatory obtained Ohio 30 ohms P. O. Box paper Philadelphia plane present Prof relation resistance Salem scientific Secretary Section selenium sensitive Smith solar solution standard candle Standing Committee stars surface temperature Tenn theory Thomas tion Univ Walnut St Washington weight William Yale College York
Bagian yang populer
Halaman 43 - Under the whip of external necessity their backward culture is compelled to make leaps. From the universal law of unevenness thus derives another law which, for the lack of a better name, we may call the law of combined development — by which we mean a drawing together of the different stages of the journey, a combining of separate steps, an amalgam of archaic with more contemporary forms.
Halaman xxiii - The objects of the Association are, by periodical and migratory meetings, to promote intercourse between those who are cultivating science in different parts of Amer1ca, to give a stronger and more general impulse and more systematic direction to scientific research, and to procure for the labors of scientific men increased facilities and a wider usefulness.
Halaman 20 - ... there is no reason to deny the final cessation of the sun's activity, and the consequent death of the system. But while this hypothesis seems fairly to meet the requirements of the case, and to be a necessary consequence of the best knowledge we can obtain as to the genesis of our system and the constitution of the sun itself, it must, of course, be conceded that it does not yet admit of any observational verification. N"o measurements within our power can test it, so far as appears at present.
Halaman 288 - ... a high water discharge is an influence which is adding to the heights of all the sand bars on the river. The greater the stage, the higher the bars and the deeper the pools become ; and so far is this from facilitating the discharge, that, in the language of the Secretary of the Mississippi River Commission, "the effect of an approaching flood is to impede its own discharge, and the impediment outlasts the flood.
Halaman 15 - ... great as to render quantitative calculations unsafe, and make positive conclusions more or less insecure. We can pretty confidently infer the presence of iron and hydrogen and other elements in the sun by appearances which we can reproduce upon the earth; but we cannot safely apply empirical formulae (like that of Dulong and Petit, for instance), deduced from terrestrial experiments, to determine solar temperatures: such a proceeding is an unsound and unwarrantable extrapolation, likely to lead...
Halaman 21 - ... tons a day on every square mile. As regards the theory of Siemens, the matter has been, of late, so thoroughly discussed, that we probably need spend no time upon it here. To say nothing as to the difficulties connected with the establishment of such a far-reaching vortex as it demands, nor of the fact that the temperature of the sun's surface appears to be above that of the dissociation point of carbon compounds, and hence above the highest heat of their combustion, it seems certainly demonstrated,...
Halaman 24 - ... into its present path by the attraction of Jupiter, as generally admitted, it must have had its velocity reduced from about eleven miles a second to five. Now, it is very difficult, if not out of the question, to imagine any possible configuration of the two bodies and their orbits which could result in so great a change. While I am by no means prepared to indorse as conclusive all the reasoning in the article referred to, and should be very far from ready to accept the author's alternative theory...
Halaman 14 - ... of solution. Thus, while experiments upon the velocity of light and heliometric measurements of the displacements of Mars among the stars agree remarkably in assigning a smaller parallax (and greater distance of the sun) than seems to be indicated by the observations of the late transits of Venus, and by methods founded on the lunar motions, on the other hand, the meridian observations of Mars all point to a larger parallax and smaller distance. While still disposed to put more confidence in...
Halaman 6 - ... present time, the most effective tests suggested are from the transits of Mercury and from the eclipses of Jupiter's satellites. On the whole, the result of Professor Newcomb's elaborate and exhaustive investigation of all the observed transits, together with all the available eclipses and occultations of stars, tends rather to establish the sensible constancy of the day, and to make it pretty certain (to use his own language) that "inequalities in the lunar motions, not accounted for by the...
Halaman 29 - The next two columns give the number of nights on which they were observed with the meridian photometer, and the resulting magnitude. The details of these measures and a comparison with various other determinations of their light will be found in the Harv. Observ. Annals, Vol. XIV. The last columns give the number of stars in each of the charts, and the corresponding number of stars contained in the same portions of the Durchmusterung. Stars suitable for standards must next be selected by the help...